Phase Separation and the Phase Diagram in Cuprates Superconductors
arXiv:cond-mat/0606307 · doi:10.1088/0953-8984/19/8/086218
Abstract
We show that the main features of the cuprates superconductors phase diagram can be derived considering the disorder as a key property of these materials. Our basic point is that the high pseudogap line is an onset of phase separation which generates compounds made up of regions with distinct doping levels. We calculate how this continuous temperature dependent phase separation process occurs in high critical temperature superconductors (HTSC) using the Cahn-Hilliard approach, originally applied to study alloys. Since the level of phase separation varies for different cuprates, it is possible that different systems with average doping level pm exhibit different degrees of charge and spin segregation. Calculations on inhomogeneous charge distributions in form of stripes in finite clusters performed by the Bogoliubov-deGennes superconducting approach yield good agreement to the pseudogap temperature T*(pm), the onset of local pairing amplitudes with phase locked and concomitantly, how they develop at low temperatures into the superconducting phase at Tc(pm) by percolation.
arXiv comment9 pages, 9 figures. Submitted to Phys. Rev. B
References in corpus (36)
- Angle-resolved photoemission spectroscopy of the cuprate superconductors
- The pseudogap in high-temperature superconductors: an experimental survey
- Discovery of microscopic electronic inhomogeneity in the high-Tc superconductor Bi2Sr2CaCu2O8+x
- Imaging the granular structure of high-Tc superconductivity in underdoped Bi2Sr2CaCu2O8+x
- A `checkerboard' electronic crystal state in lightly hole-doped Ca_{2-x}Na_{x}CuO_{2}Cl_{2}
- The Nernst effect in high- superconductors
- The doping dependence of T* - what is the real high-Tc phase diagram?
- Imaging Quasiparticle Interference in Bi2Sr2CaCu2O8+d
- Local Ordering in the Pseudogap State of the High-T Superconductor BiSrCaCuO
- Inhomogeneous Pairing in Highly Disordered s-wave Superconductors
- Doping dependent evolution of the electronic structure of La2-xSrxCuO4 in the superconducting and metallic phases
- Nodal metallic behavior of lightly-doped LaSrCuO
- Inherent Inhomogeneities in Tunneling Spectra of BSCCO Crystals in the Superconducting State
- Neutron diffraction evidence of microscopic charge inhomogeneities in the CuO2 plane of superconducting La2-xSrxCuO4 (0 < x <0.30)
- (63)Cu NQR Evidence for Spatial Variation of Hole Concentration in La(2-x)Sr(x)CuO(4)
- Discrimination between the superconducting gap and the pseudo-gap in Bi2212 from intrinsic tunneling spectroscopy in magnetic field
- Critical temperature and superfluid density suppression in disordered high- cuprate superconductors
- Dopant-modulated pair interaction in cuprate superconductors
- Inhomogeneous Low Frequency Spin Dynamics in La_{1.65}Eu_{0.2}Sr_{0.15}CuO_4
- The Dichotomy between Nodal and Antinodal Quasiparticles in Underdoped (LaSr)CuO Superconductors
- Numerical Study of the Cahn-Hilliard Equation in One, Two and Three Dimensions
- Inhomogeneity Induces Resonance Coherence Peaks in Superconducting BSCCO
- Dual Nature of the Electronic Structure of the Stripe Phase
- The Doping Phase Diagram of Y1-xcaxba2(Cu1-yzny)3O7-d from Transport Measurements: Tracking the Pseudogap Below Tc (y = 0)
- Absence of static phase separation in the high-Tc cuprate
- Planar Cu and O hole densities in high-Tc cuprates determined with NMR
- Intrinsic tunneling spectra of Bi_2(Sr_{2-x}La_x)CuO_6
- Absence of gross inhomogeneity in HTS cuprates
- A Theory for High- Superconductors Considering Inhomogeneous Charge Distribution
- The Effects of Phase Separation in the Cuprate Superconductors
- NMR Evidence for Charge Inhomogeneity in Stripe Ordered La_{1.8-x}Eu_{0.2}Sr_{x}CuO_4
- Evidence of ion diffusion at room temperature in microcrystals of the Bi2Sr2CaCu2O8+delta superconductor
- Two Pseudogaps in the Cuprates
- Mechanism of High-Tc Superconductivity Based Mainly on Tunneling Measurements in Cuprates
- Theory of the Diamagnetism Above the Critical Temperature for Cuprates
- Two energy gaps in cuprates: pairing and coherence gaps: The interpretation of tunneling and inelastic neutron scattering measurements
Cited by in corpus (8)
- Intrinsic phase separation in superconducting K0.8Fe1.6Se2 (Tc= 31.8 K) single crystals
- Inhomogeneous Magnetic-Field Response of YBa2Cu3Oy and La2-xSrxCuO4 Persisting above the Bulk Superconducting Transition Temperature
- Coexistence of Dirac-Cone States and Superconductivity in Iron Pnictide Ba(FeRuAs)
- Enhancement of superconducting fluctuation under the coexistence of a competing pseudogap state in Bi2Sr2-xRxCuOy
- Electronic Phase Separation Transition as the Origin of the Superconductivity and the Pseudogap Phase of Cuprates
- High-field muSR studies of superconducting and magnetic correlations in cuprates above Tc
- Development of spatial inhomogeneity of internal magnetic field above in BiSrCaYCuO observed by longitudinal-field muon-spin-relaxation
- Measurements and analysis of the upper critical field on an underdoped and overdoped compounds